Nanotech 2013 Vol. 1
Nanotech 2013 Vol. 1
Nanotechnology 2013: Advanced Materials, CNTs, Particles, Films and Composites (Volume 1)

Nanostructured Materials & Devices Chapter 10

Novel, Flexible and Low-power Driven AC Electroluminescent Lamp from Carbon Nanotube Embedded Phosphor Material

Authors: D. Haranath, D. Yadav, S. Sahai, V. Shanker

Affilation: CSIR-National Physical Laboratory, India

Pages: 721 - 724

Keywords: phosphor, carbon nanotube, hybrid device

 We present a novel, cost-effective and simple technique operable at room temperature, wherein a non-electroluminescent (non-EL) material is being converted to exhibit stable and efficient EL using CNTs.  The role of CNT has been identified as a local electric field enhancer and facilitator in the hot carrier injection inside the ZnS crystal to conceive EL in the hybrid material.  Commercial ZnS:Cu phosphor (P-22G having quantum yield of 65±5%) is blended with a very low (0.01 wt.%) concentration of multi-walled CNTs; annealed in presence of a flux to produce an efficient and stable EL phosphor hybrid material.  For the first time, we are successful in designing a novel device driven by alternating current (AC) and we anticipate the process could be easily scaled up to larger area panels.  The electro-optical properties of the newly developed AC-EL device have been thoroughly discussed.

ISBN: 978-1-4822-0581-7
Pages: 830
Hardcopy: $209.95